Java: Update specific array element by given element

Last update on May 21 2025 12:47:32 (UTC/GMT +8 hours)

5. Update ArrayList Element

Write a Java program to update an array element by the given element.

Pictorial Presentation:

Java Collection, ArrayList Exercises: Update specific array element by given element

Sample Solution:-

Java Code:

import java.util.*;
  public class Exercise5 {
  public static void main(String[] args) {
  // Creae a list and add some colors to the list
  List<String> list_Strings = new ArrayList<String>();
  list_Strings.add("Red");
  list_Strings.add("Green");
  list_Strings.add("Orange");
  list_Strings.add("White");
  list_Strings.add("Black");
  // Print the list
  System.out.println(list_Strings);
  // Update the third element with "Yellow"
  list_Strings.set(2, "Yellow");
   // Print the list again
  System.out.println(list_Strings);
 }
}

Sample Output:

[Red, Green, Orange, White, Black]                                     
[Red, Green, Yellow, White, Black]

Flowchart:

For more Practice: Solve these Related Problems:

Write a Java program to update an element at a specified index in an ArrayList and then print the modified list.
Write a Java program to replace all occurrences of a specific value in an ArrayList with another value using streams.
Write a Java program to update an ArrayList element by comparing its value with a threshold and replacing it conditionally.
Write a Java program to update elements of an ArrayList using a lambda expression that appends the element's index to its value.

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